/**
 * shenyc
 */

export const toString = Object.prototype.toString;

export const is = (val: unknown, type: string) => {
    return toString.call(val) === `[object ${type}]`;
};

export const isDef = <T = unknown>(val?: T): val is T => {
    return typeof val !== "undefined";
};

export const isUndef = <T = unknown>(val?: T): val is T => {
    return !isDef(val);
};

export const isObject = (val: any): val is Record<any, any> => {
    return val !== null && is(val, "Object");
};

export const isEmpty = <T = unknown>(val: T): val is T => {
    if (isArray(val) || isString(val)) {
        return val.length === 0;
    }

    if (val instanceof Map || val instanceof Set) {
        return val.size === 0;
    }

    if (isObject(val)) {
        return Object.keys(val).length === 0;
    }

    return false;
};

export const isDate = (val: unknown): val is Date => {
    return is(val, "Date");
};

export const isNull = (val: unknown): val is null => {
    return val === null;
};

export const isNullAndUnDef = (val: unknown): val is null | undefined => {
    return isUndef(val) && isNull(val);
};

export const isNullOrUnDef = (val: unknown): val is null | undefined => {
    return isUndef(val) || isNull(val);
};

export const isNumber = (val: unknown): val is number => {
    return is(val, "Number");
};

export const isPromise = <T = any>(val: unknown): val is Promise<T> => {
    return is(val, "Promise") && isObject(val) && isFunction(val.then) && isFunction(val.catch);
};

export const isString = (val: unknown): val is string => {
    return is(val, "String");
};

export const isFunction = (val: unknown): val is Function => {
    return typeof val === "function";
};

export const isBoolean = (val: unknown): val is boolean => {
    return is(val, "Boolean");
};

export const isRegExp = (val: unknown): val is RegExp => {
    return is(val, "RegExp");
};

export const isArray = (val: any): val is Array<any> => {
    return val && Array.isArray(val);
};

export const isMap = (val: unknown): val is Map<any, any> => {
    return is(val, "Map");
};

export function isUrl(path: string): boolean {
    const reg: RegExp =
        /(((^https?:(?:\/\/)?)(?:[-:&=\+\$,\w]+@)?[A-Za-z0-9.-]+(?::\d+)?|(?:www.|[-:&=\+\$,\w]+@)[A-Za-z0-9.-]+)((?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&%@.\w_]*)#?(?:[\w]*))?)$/;
    return reg.test(path);
}
